FAQ
TL;DR: Bosch Maxx 7 WAE2047KPL can add “an additional 2 liters” using Extra/Kids Rinse; users seek higher levels for allergy-grade rinsing. “The washing machine uses an additional 2 liters.” [Elektroda, Pedros050, post #16704143]
Why it matters: If your loads aren’t submerged enough, you can tweak the hydrostat path or add water safely for better rinsing, especially for sensitive skin.
Quick Facts
- Model insight: This Maxx 7 uses an electronic pressure sensing path; users report low default water levels by design. [Elektroda, czp01, post #16704098]
- Extra/Kids Rinse adds approx. 2 liters during rinsing; helpful for allergies and sensitive skin. [Elektroda, Pedros050, post #16704143]
- Machine does have a hydrostat/pressure switch, but it is not user-adjustable from the factory. [Elektroda, jurek54, post #16704993]
- Practical add-on: You can pour water via the detergent tray; avoid overfilling beyond mid-drum. [Elektroda, Anonymous, post #16704922]
- Mod path: Increasing hose/cup air volume shifts the cutoff to allow higher fill levels. [Elektroda, bse-bse, post #16708848]
Why does my Bosch Maxx 7 take so little water?
This model optimizes water for energy efficiency, so fills are intentionally low. Owners report adequate washing but poor submersion for allergy needs. The behavior is normal and confirmed by user experience and service visits. Add-on rinses or controlled modifications can raise levels when needed. [Elektroda, czp01, post #16704098]
Does the WAE2047KPL actually have a hydrostat/pressure switch?
Yes. The model uses a hydrostat (pressure switch) even if it lacks an external adjustment screw. Parts listings and owner guidance confirm its presence, though factory settings are fixed. [Elektroda, jurek54, post #16704993]
What does Extra/Kids Rinse do and how much water does it add?
Extra/Kids Rinse increases rinse water by about 2 liters to help remove detergent residue. It targets sensitive skin and allergy use cases. As one user noted, “the washing machine uses an additional 2 liters of rinsing water.” [Elektroda, Pedros050, post #16704143]
How can I safely add more water manually?
Pour clean water through the detergent tray during wash or rinse. Stop well before mid-drum height to prevent overflow or imbalance. This manual top-up method is simple and widely used by owners for heavier rinses. [Elektroda, Anonymous, post #16704922]
How do I increase the water level by modifying the hydrostat path?
You can change the sensed pressure by altering the air volume. Increase hose capacity or reduce the hydrostatic cup volume so the switch triggers later, allowing more water. Keep changes reversible and test with small loads first. [Elektroda, bse-bse, post #16708848]
3-step How-To: Raise water level via hose/cup capacity change
- Power off and access the hydrostat hose and cup.
- Fit a short section of larger-ID hose in-line or insert a spacer in the cup to reduce its volume.
- Reassemble, run a short cycle, and observe fill and drain behavior.
[Elektroda, bse-bse, post #16708848]
What is a hydrostat in a washing machine?
A hydrostat (pressure switch) senses tub water level using air pressure in a hose connected to an air chamber. When pressure reaches a threshold, it signals the control to stop filling. Electronic versions lack user screws but respond to hose/cup volume changes. [Elektroda, jurek54, post #16704993]
Will tightening springs or deep electronic tweaks cause errors?
Yes. Over-tightening or forcing the electronic pressure switch can cause faults during draining. The controller expects certain pressure profiles. If levels are too high, it may flag an error while emptying the tank. [Elektroda, bse-bse, post #16708848]
Does loading wet clothes make the washer take more water?
Yes. Pre-wetting increases sensed load, so the machine may admit more water. Users suggest starting with clothes soaked in water to gain extra fill volume without electronic changes. [Elektroda, janek5555, post #16704139]
Is pausing the cycle to add water a workable routine for allergies?
Yes. Some owners pause both wash and rinse stages to add water for deeper submersion. This approach improves detergent removal when default eco fills are too low for sensitive skin. [Elektroda, czp01, post #16704250]
My Water Plus button seems ineffective—normal?
Users report minimal change from Water Plus on some Maxx 7 variants. One owner adds water every wash and still sees limited difference, calling the button ineffective for their loads. [Elektroda, neboo, post #17318278]
Can I wire a relay to power the inlet valve directly for extra fill?
It’s possible but risky. A bell switch and 230V AC relay can power the valve while isolating the programmer. However, the controller may detect disconnection as a fault. Proceed only if you understand mains safety. [Elektroda, 65469, post #16705265]
Should I check the hydrostatic hose or cup for clogging first?
Yes. Inspect and clean the hydrostatic cup and the connecting hose before modifications. Restrictions distort pressure readings and can lower fill levels or cause erratic behavior. [Elektroda, jurek54, post #16704993]
How much is too much when manually filling?
Keep below mid-drum to avoid overflows and spin issues. One user even washed at about three-quarters full and completed the cycle, but this is not recommended as routine practice. [Elektroda, Anonymous, post #16704922]
Any real-world outcomes or edge cases from owners?
Yes. A user adds about one-third of the window height per wash and once ran at roughly three-quarters drum water. Another observed the short 30-minute program sometimes skipped spinning. These show benefits and oddities. [Elektroda, neboo, post #17318278]
